gexp: Allow character literals in GEXP->SEXP.

Fixes <https://bugs.gnu.org/38628>.

* tests/gexp.scm ("lower-gexp, character literal"): New test.
* guix/gexp.scm (gexp->sexp)[self-quoting?]: Add CHAR? to the tested types.
* guix/repl.scm (self-quoting?): Likewise.
* gnu/tests.scm (marionette-shepherd-service)[self-quoting?]: Likewise.

1 files changed, 1 insertions, 1 deletions

diff --git a/gnu/tests.scm b/gnu/tests.scm
index 27cb39c2b99..cc72e568583 100644
--- a/gnu/tests.scm
+++ b/gnu/tests.scm
@@ -98,7 +98,7 @@
                                                 (or (pred x)
                                                     (one-of rest ...))))))
                        (one-of symbol? string? keyword? pair? null? array?
-                               number? boolean?)))
+                               number? boolean? char?)))
 
                    (match (primitive-fork)
                      (0